Best GUI for small-scale accounting app?

[RM]

I admit that I don't know much about Qt in Windows.  As, I said, I've
never seen it.  The fact that they don't offer a GPLed version for
Windows is a deterrent for me.

I have heard very nice things about Qt's api.  I even bought a book on
it, but since the apps I've needed to write, had to be cross platform,
and were nicely done in wxPython/PythonCard on Windows *for free*, I
haven't been able to justify the time to look at it.

Question for you, does Qt use the native Windows dialogs and widgets or
does it use its own?  If the latter, how close are they to the native
look?  Will they change appearance when a user chooses a different
theme in the Display Dialog?